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arXiv 1003.1017nucl-th
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从核物质到彩色超导夸克物质的相变:同位旋的影响

Phase transition from nuclear matter to color superconducting quark matter: the effect of the isospin

G. Pagliara, J. Schaffner-Bielich

摘要:

计算了不同温度和质子分数下核物质和2SC物质的混合相。在证明了2SC相的对称性能量在很好的近似下比正常夸克相的对称性能量大三倍之后,我们讨论并比较了含有2SC成分和正常夸克物质成分的混合相的所有性质。特别是,无论是2SC相还是正常夸克相,核和夸克分量的局域同位旋密度以及混合相的刚度都有显着不同。在低能重离子碰撞实验中,如果2SC相采用强双夸克对,则有可能最终进入核物质2SC物质混合相.最后讨论了能够辨别2SC相或正常夸克相的形成的可能观测量。

英文摘要:

We compute the mixed phase of nuclear matter and 2SC matter for different temperatures and proton fractions. After showing that the symmetry energy of the 2SC phase is, to a good approximation, three times larger than the one of the normal quark phase, we discuss and compare all the properties of the mixed phase with a 2SC component or a normal quark matter component. In particular, the local isospin densities of the nuclear and the quark component and the stiffness of the mixed phase are significantly different whether the 2SC phase or the normal quark phase are considered. If a strong diquark pairing is adopted for the 2SC phase, there is a possibility to eventually enter in the nuclear matter 2SC matter mixed phase in low energy heavy ions collisions experiments. Possible observables able to discern between the formation of the 2SC phase or the normal quark phase are finally discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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